Multiple-needle single-chain-stitch-machine.



L. ONDERDONK.

MULTIPLE NEEDLE SINGLE CHAIN STITCH MACHINE. APPLICATION FILED 001. so, 1007.

1 1 1 8,574. Patented Nov. 24. 191 1 4 annIiT's-snnm' 1.

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1 1 1 8,574. APPLIOATION FILED OUT. 30, 1907. Patented Nov. 24'

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APPLICATION FILED OUT. 30. 1907. 1, 1 1 8,574, Patented Nov. 24. 19M

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MULTIPLE NEEDLE SINGLE CHAIN STITGH MACHINE.

APPLICATION FILED OUT. 30. 1907.

1, 1 18,574, Patented Nov. 24, 1914.

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UNITED STATES PATENT OFFICE.

LANSING ONDERDONK, OF NEW YORK N. Y., ASSIGNOR T0 UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MULTIPLE-NEED SINGLECHAIN-STITCH MACHINE.

specification of Letters Patent.

Patented Nov. 24, 1914.

Application and October. 30, 1007. Serial No. 3991831.

To all whom it may concern:

Be'it knowmth-at I, LANSING. ONDERDONK, a citizen of the United States, 'residin at New York, in the county of New ork,

State of New. York, have invented certain.

new. and useful Improvements in Multiple,- Nedle' Sin 1e --Chain-Stitch Machines, of which-the? ollowing is a description, IQIGI'. ence being had to the accompanying drawing and-to the lettersmnd :figures of referforming single chain stitches. It will be,

obtious, however, that from certain aspects,

= my inventiomis not restricted to a plurality of needles and loopers, nor toa looper of the nomthread-carrying type.

The object of my inventionis to provide a stitch-forming mechanism wherein a plurality of limes ofsti'tching may' be made at a-considerable' distance apart. further object of my invention is toprovide a mechanism for operating a looper, whereby said looper may be given a relamay quick movement into the needle loop, and -whereinsaid looper is for the greater part of its movement, in the needle loop.

"Further objects of my invention will in part be obvious, and in pait be hereinafter more fully set forth.

In thedrawings which show by way of illustration oneembodiment of my tion-,r- Figure 1 is a front elevation with parts-in section showing a machine having my improved stitch-forming mechanism appliedthereto; Fig. 2 is-an end 'view of the same, with the bed plate removed, and oer: tainparts in section; .Fig. 3 is a top plan view of the forward end of the machine, showing the parts beneath the work support, the" feed dogs being broken away; Fig. 41s a detail, showing the relative position of the needle-and looper, when the looper is at'rthe rear end of its stroke; Fig. 5 is a similar View, with the driving shaft given a (uarter turni; ig. 6 is asimilar vieW,-with t he looper in its forward position; and Fig.

inven- 7 is a similar view, showing the driving :haft having been given a three-quarter urn. t

The bed plate 1 has rising therefrom the usual overhanging arm 2, on which ispivotally mounted a needle lever'3, which is oscillated from the main shaft 4, b means of the usual link 5. The needle ar 6 is mounted to reciprocate in bearings in the forward end of the overhan' 'ng arm and carries a needle'head 7 at'its wer end. In said needlehead is mounted, asshown in the present embodiment ofmmy. invention,

four needles 8, 8, and 9, .9. Said needles, as

clearly shown in Fi 1, are arranged in pairs at the outer on of .theineedle head '7. It is obvious, however, that thelne'edles may be disposed in any; desired manner-upon the needle'head, and that any numberof needles may be substituted: for thefo'ur needles herein shown, without inv any-way departing from the spirit :of my invention; "1"

."lhepresser foot 10disl mounted on the usualipresserban 11, which may be lifted by a'presser bar lever 12.. Said press'erfoot 10 is shown res provided with an adjustable guiding fin er 13 iat'feachi end thereof, betweenwhic astrip may be guided and stitched to'a fabric when desired. The feed bar 14 is pivoted to the usual feed rocker 15, which is oscillated by an eccentric strap .16, carrying a ball stud 17, which engages the outer end of an arm 18 rigidly secured to the rocking frame 15."

The eccentric strap 16 engages an eccentric on'the main shaft 4. Said eccentric is secured to a disk 19, which in turn is secured to a collar 20 mounted on the main shaft 4.. The disk 19 maybe adjusted across the face of ithe'collar 20, for the purpose of varying the'movements of the rocking frame 15.

The feed her at its forward end carriesa- -Oo6peratingwith the needles 8, 8,-are two loopers 25, 25, each of which is supported in rod 27 has a collar 34, secured thereto at one end, and at its opposite end an arm 35 is clamped thereon by means of screws 36, 36.

The arm 35 is forked at its outer end, and embraces one end of a link 37 which is pivotally connected at its opposite end to a crank pin 38. Said crank pin 38 is mounted on the outer end of a crankarm 39, which is secured to the outer end of the main shaft in any suitable manner.

The needle threads are led through suitable tensions 41, and thence through suitable thread guides 42, 4:3 and lkto the thread guide 45 at the upper end of the needle bar. The needle threads are then led through suitable guiding eyes 46 in the needle head 7 to the respective needles.

The operation of my device will be apparent from the above description. As the main shaft rotates, the needle 1s reciprocated through the needle lever 3, and the loopers are oscillated through the crank pin 38 and link 37, which operates the looper supporting rod 27. It will be noted that the looper when in its extreme rearward position, as shown in Fig. 4, is only slightly in the rear of the needle. At this time the crank pin 38 is passing the dead center, and, therefore, the looper is given an extended dwell. The needle is at this time at the lower end of its stroke, and after the same has risen slightly to throw out the needle loop the looper moves forward into said needle loop and by the time the main shaft has been given a quarter turn the point of the looper is well into the needle loop, and the needle has risen so that the eye thereof is slightly above the looper. The looper continues its forward movement until the main shaft has been given a half turn, and at this time the needle has reached substantially the upper end of its stroke, as shown in Fig. 6. At this time the looper is given a slight dwell, owing to the fact that the crank pin is again on the dead center. The needle then descends for the new stitch, the feed having taken place while the needle was on the upper portion of its stroke, and the looper meanwhile slightly retracts, but the enlarged portion 47 on the under side. of the looper serves to retard the needle loop formed on the previous stroke of the needle, so that the point of the needle enters said needle loop carried by the looper.

The loopers as shown in Fig. 1, may be so constructed as to work upon opposite sides of the needles, thus allowing the needles to be placed very closely together. It will be also noted that the'looper moves in the direction of the feed, and that the needle loops, therefore, supported by the loopers will extend from the previous needle puncture around the shank of the looper and thus be spread or properly positioned for the entrance of the needle into the needle loop on the looper.

llt will be obvious that the loopers and needles may be-positioned so as to form rows of stitches a considerable distance apart, and also so as to form practically any number of rows of stitches within certain limits.

By my particular form of looper-operating mechanism, the looper is given a dwell at the rear end of its stroke, and is then moved forward with increasing speed until the same has entered well into the needle loop, after which the speed of the looper decreases, and an extended dwell is 'ven at the forward end of the stroke 0 the looper. The movements of the loo er on same as those on the forward stroke.

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent, is

1. The combination of a Work sup ort, a main shaft located beneath the wor support, a looper supporting shaft in front of said main shaft, a plurality of loopers carried by said looper supporting shaft, spaced bearings in which said looper supporting shaft is mounted, a crank arm carried by the forward end of said looper supporting shaft, a crank pin carried by the end of the main shaft, and a link for connecting said crank arm and said crank pin.

2. The combination of a work support, a main shaft located beneath the work support,'a looper supporting shaft in front of said main shaft, a plurality of 100 ers carried by said looper supportingsha means for independently adjustably connecting said loopers to said looper supporting shaft, spaced bearings in which said looper sup porting shaft 1s mounted, a crank arm carried by the forward end of said looper supporting shaft, a crank pin carried by the endof the main shaft, and a link for connecting said crank arm and said crank pin.

3. The combination of a work sup ort, a main shaft located beneath the wor support, a looper supporting shaft in front of said main shaft, a plurality of loopers carried by said looper s11 porting shaft, means for independently an adjustably connecting said loopers to said looper suplporting shaft, spaced hearings in WhlCh sa1 supportmg shaft is mounted to oscillate back and forth without endwise movement, a crank arm carried by the end of the looper supporting shaft, an eccentrically disposed member on said main shaft, and means for In testimony whereof I aflix my signalooper ture, in presence of two witnesses.

LANSING ONDERDONK. 

